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Preliminary 2025 facility recordOperating

Apache Junction, AZ · EIA plant 145

Horse Mesa

Horse Mesa is a hydro power facility in Apache Junction, AZ, with 131 MW of operating capacity.

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Operating capacity131 MW4 operating generators
Proposed capacity0 MW0 proposed generators
UtilitySalt River ProjectEIA-reported operator
Balancing authoritySRPSalt River Project

Capacity profile

Fuel and technology

Nameplate capacity
Operating
Hydro131 MW
ProposedNo proposed capacity reported
Reported technologiesConventional HydroelectricHydroelectric Pumped Storage

Nearby in AZ

Related facilities

AZ · 6.3 miMormon Flat64 MW →AZ · 11.2 miStewart Mountain13 MW →AZ · 11.9 miRoosevelt36 MW →AZ · 22.0 miPediment BESS I250 MW →

Source quality

Preliminary facility data

This page uses the EIA-860 2025 Early Release. EIA identifies the release as preliminary, so it should not be used for official state or national aggregation. Capacity is nameplate capacity, not real-time output or annual generation.

Read methodologyEIA-860 source